Brocade Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide (Supporting R05.6.00) - Manual (Page 590)

566 Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide
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Local VLL
4
Brocade(config-mpls)# vll-local test1
Brocade(config-mpls-vll-lo-test1)# vlan 100
Brocade(config-mpls-vll-lo-test1-vlan)# tag e 2/1
Brocade(config-mpls-vll-lo-test1-if-e-2/1)# vlan 100 inner-vlan 200
Brocade(config-mpls-vll-lo-test1-vlan)# tag e 2/1
Brocade(config-mpls-vll-lo-test1-vlan)#
The result of this example is that single-tagged packets received on port 2/1 with VLAN ID
value of “100” and double-tagged packets with an outer-VLAN value of “100” and inner-VLAN
of any value other than “200” are sent back out from port 2/1 with outer-VLAN value of “100”
and an inner-VLAN value of “200”. Dual-tagged packets received on port 2/1 with an
outer-VLAN value of “100” and an inner-VLAN value of “200” are sent back out from port 2/1
as single-tagged packets with a VLAN value of “100”.
• In any given Local VLL instance, two dual-tag endpoints on the same port are not allowed. The
Error messages displayed in bold in the following two configuration examples describe this
restriction.
Brocade(config-mpls)# vll-local test3
Brocade(config-mpls-vll-lo-test3)# vlan 100 inner-vlan 400
Brocade(config-mpls-vll-lo-test3-vlan)# tag e 2/3
Brocade(config-mpls-vll-lo-test3-if-e-2/3)# vlan 100 inner-vlan 500
Brocade(config-mpls-vll-lo-test3-vlan)# tag e 2/3
Error - VLL test3 already has a dual tag end-point on port 2/3 - another dual
tag endpoint on the same port not allowed.
Brocade(config-mpls)# vll-local test4
Brocade(config-mpls-vll-lo-test3)# vlan 1000 inner-vlan 400
Brocade(config-mpls-vll-lo-test3-vlan)# tag e 2/3
Brocade(config-mpls-vll-lo-test3-if-e-2/3)# vlan 2000 inner-vlan 500
Brocade(config-mpls-vll-lo-test3-vlan)# tag e 2/3
Error - VLL test4 already has a dual tag end-point on port 2/3 - another dual
tag endpoint on the same port not allowed.
To support dual tags, the VLAN CLI command in the Local VLL configuration mode has a parameter
that lets the user configure dual tag endpoints.
Brocade(config)# router mpls
Brocade(config-mpls)# vll-local test1
Brocade(config-mpls-vll-lo-test1)# vlan 200 inner-vlan 300
Brocade(config-mpls-vll-lo-test1-vlan)# tagged ethernet 1/2
Syntax: [no] vlan VLAN-ID inner-vlan Inner-VLAN-ID
The range for VLAN-ID is 1 – 4094. (This parameter range excludes the default VLAN ID.)
The range for inner-VLAN-ID is 1 – 4095. (This parameter range does not exclude the default VLAN
ID.)
Configuring Local VLL QoS (optional)
The user can configure a Class of Service (COS) value for either a tagged or untagged port. when
the COS value is configured, it is used to determine traffic priority as described in
“Local VLL QoS”
on page 562.